CN1317065C - High active calcium-base CO2 absorbent and its preparing method - Google Patents
High active calcium-base CO2 absorbent and its preparing method Download PDFInfo
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- CN1317065C CN1317065C CNB2005100112328A CN200510011232A CN1317065C CN 1317065 C CN1317065 C CN 1317065C CN B2005100112328 A CNB2005100112328 A CN B2005100112328A CN 200510011232 A CN200510011232 A CN 200510011232A CN 1317065 C CN1317065 C CN 1317065C
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- 239000002250 absorbent Substances 0.000 title claims abstract description 63
- 230000002745 absorbent Effects 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000292 calcium oxide Substances 0.000 claims abstract description 38
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000002360 preparation method Methods 0.000 claims abstract description 28
- 239000011575 calcium Substances 0.000 claims abstract description 27
- 239000012153 distilled water Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 17
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 15
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002585 base Substances 0.000 claims description 26
- 238000001035 drying Methods 0.000 claims description 20
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- 159000000013 aluminium salts Chemical class 0.000 claims description 10
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 8
- 150000001298 alcohols Chemical class 0.000 claims description 6
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical class [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 claims description 6
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229910021532 Calcite Inorganic materials 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000019738 Limestone Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 239000010459 dolomite Substances 0.000 claims description 2
- 229910000514 dolomite Inorganic materials 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 239000006028 limestone Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 50
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 25
- 239000001569 carbon dioxide Substances 0.000 abstract description 23
- 238000010521 absorption reaction Methods 0.000 abstract description 17
- 238000006243 chemical reaction Methods 0.000 abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 13
- 239000001257 hydrogen Substances 0.000 abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000009257 reactivity Effects 0.000 abstract description 9
- 239000007789 gas Substances 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002407 reforming Methods 0.000 abstract description 4
- 230000004087 circulation Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 7
- 230000008929 regeneration Effects 0.000 description 6
- 238000011069 regeneration method Methods 0.000 description 6
- 230000004044 response Effects 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000006057 reforming reaction Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003837 high-temperature calcination Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000000629 steam reforming Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000235830 Salmonella enterica subsp. enterica serovar Ohio Species 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000009719 regenerative response Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001991 steam methane reforming Methods 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a high activity calcium-based CO2 absorption agent and a preparation method thereof, which belongs to the technical field of a solid absorption agent for absorbing gas. In the method, alcohol, distilled water, aluminum salt and calcium oxide are used as raw materials, the raw materials are calcined for 1 to 4 hours at the temperature of 800 to 1000 DEG C, the alcohol and the distilled water are added, and a dried sample is calcined for three hours at the time of 500 to 700 DEG C. The dried sample is pulverized and milled, the distilled water is added again, and the dried sample is dried; the dried sample is calcined for one to three hours at the temperature of 700 to 1100 DEG C, and the high activity calcium-based CO2 absorption agent is obtained after the dried sample is pulverized and milled. The carbon dioxide absorbent prepared by the present invention has the advantages of high carbon dioxide absorption capacity, stable reactivity and no reduction of the absorption capacity after multiple reactions and circulations; the present invention is the ideal carbon dioxide absorbent for reforming a hydrogen manufacturing reaction process by absorption enhancement type water vapor natural gas.
Description
Technical field
The present invention relates to a kind of high active calcium-base CO
2Absorbent (CaO/Ca
12Al
14O
33) and preparation method thereof, belong to the solid absorbent technical field that absorbs gas.Can be used as carbon-dioxide absorbent and be applied to water vapour methane reforming process for making hydrogen to improve hydrogen purity, methane conversion and entire system efficient; With CO
2Have a wide range of applications in the near-zero release carbon-based fuel process for making hydrogen of acceptor method; Be applicable to various industrial tail gas percent of greenhouse gases CO simultaneously
2Separation process; Also can be used as with CO
2High activity reactive material for the chemical heat pump of flow working medium.
Background technology
In all possible hydrogen producing technology, the gas water steam reforming is the most ripe at present, and the output of whole world hydrogen in 2002 has 48% to be provided by the natural gas steam reforming hydrogen manufacturing process.But traditional gas water steam reformation hydrogen production has production system and maximizes, and the shortcoming that investment of equipment and operating cost are higher absorbs enhanced steam methane reforming process and be at present in the world one of improved reactive mode at these shortcomings.Its reaction mechanism is promptly in water vapour methane reforming process, with the CO of the real-time absorption reaction generation of calcium-base absorbing agent
2Thereby, break thermodynamical equilibrium, promote reforming reaction and carry out to the product direction, under uniform temp, improved CH
4Conversion ratio, simultaneously liberated heat also can be supplied with the reforming reaction of strong heat absorption during the absorbent absorbing carbon dioxide.Because the reformation hydrogen production reaction is continuous, as a to circulate course of reaction, require carbon-dioxide absorbent to have higher activity and stable, but active decline all appears in present various carbon-dioxide absorbent after experiencing repeatedly reaction cycle, the phenomenon that the carbon dioxide absorption ability reduces has hindered the large-scale application of this technology in industry.
In addition, in many industry and scientific domain, for example aerospace, diving, medicine, chemical industry, microelectronics, food, metallurgy, electric power etc. need to remove the carbon dioxide in the gas.Calcium-base absorbing agent is because its absorbability is strong, with low cost, and raw material sources are extensive, and preparation and regeneration technology are simple, and green non-poisonous characteristics are used widely.But in actual applications, because the restriction of the device space or operating procedure, therefore can not place a large amount of absorbents or frequently change absorbent, its reactivity and stability proposed high requirement, not influence its carbon dioxide absorption ability after promptly experiencing repeatedly reaction cycle.The present invention equally also is the desirable carbon-dioxide absorbents in these fields.
Summary of the invention
The objective of the invention is to prepare a kind of industrial carbon-dioxide absorbent that is applicable to, both can be efficiently absorbing carbon dioxide in large quantities, reacting completely simultaneously, promptly absorb and be easy to regeneration when reaching capacity to come into operation again, and after the reaction cycle that experiences repeatedly absorption/regeneration, still keep stable reactivity, do not influence its carbon dioxide absorption ability.
A kind of high active calcium-base CO of proposition of the present invention
2Absorbent is characterized in that: described absorbent main component is CaO and Ca
12Al
14O
33, two kinds of composition quality ratios can be (60: 40-80: 20).
A kind of high active calcium-base CO of proposition of the present invention
2The preparation method of absorbent is characterized in that: described method is with alcohols, distilled water, and aluminium salt, calcium oxide are raw material, its preparation process is followed successively by:
(1) calcium oxide was calcined 1～4 hour at 800～1000 ℃;
(2) calcium oxide of weighing step (1) calcining under the room temperature adds alcohols then and (can guarantee Al
3+Required hydroxyl gets final product), add distilled water again;
(3) in above-mentioned compound, add aluminium salt (by required absorbent quality and final CaO: Ca
12Al
14O
33Ratio is calculated and can be got), stir in the water bath with thermostatic control;
(4) compound that stirs is carried out drying, till the water evaporates in sample is intact;
(5) the dry good sample of step (4) was calcined 3 hours in 500～700 ℃, taken out then, the sample mill comminution is thin;
(6) in above-mentioned levigate material, add distilled water, drying;
(7) drying is good sample was calcined 1～3 hour down at 700～1100 ℃;
(8) sample after will calcining grinds porphyrize, is high active calcium-base CO
2Absorbent.
At above-mentioned high active calcium-base CO
2Among the preparation method of absorbent, alcohols is any in isopropyl alcohol, ethanol, the methyl alcohol in the described raw material.
At above-mentioned high active calcium-base CO
2Among the preparation method of absorbent, aluminium salt is solvable in water in the described raw material, and aluminium salt is any in anhydrous Aluminum chloride, the 9 water aluminum nitrates.
At above-mentioned high active calcium-base CO
2Among the preparation method of absorbent, described raw material calcium base is CaO, can pass through material preparations such as lime, lime stone, dolomite, calcite.
Utilize the carbon-dioxide absorbent of the inventive method preparation, not only has very high carbon dioxide absorption ability, and reactivity is stable, absorbability does not descend after reaction cycle repeatedly, is the desirable carbon-dioxide absorbent that absorbs enhanced water vapour gas renormalizing hydrogen production reaction technology.
Description of drawings
Fig. 1 prepares the absorbent schematic diagram for hydration of the present invention.
Fig. 2 is the various solid CO of the present invention
2Absorbent increases CO with reaction times
2The variation diagram of uptake, (annotate: PCC and LC are two kinds of calcium-base absorbing agents of U.S. Ohio Univ preparation among the figure).
The specific embodiment
Below in conjunction with drawings and Examples principle of the present invention and technical scheme are described further:
Synthetic route of the present invention can be represented simply to describe as Fig. 1: chemical reaction (digestion) → thermal expansion grain refine → chemical reaction (calcining) → structure of matter reconstruct (formation of carrier between the calcium oxide ultra-fine grain) → high-specific surface area forms.The preparation process of absorbent relies on physics and chemical dual effect, has formed by the Ca (OH) of abundant refinement
2With other hydrated product of high-specific surface area, through high-temperature calcination, the formation of carrier has hindered the sintering between the calcium oxide particle between the calcium oxide ultra-fine grain, so absorbent is active higher, experience repeatedly reaction cycle after the carbon dioxide absorption ability do not descend.The result finds out from XRD analysis, after the high-temperature calcination in the absorbent carrier mainly with Ca
12Al
14O
33Be main component.
Because this absorbent to the efficient absorption (0.45g/g absorbent) of carbon dioxide, promotes chemical reaction and carries out to generating the hydrogen direction in the water vapour methane reforming reaction, has improved the purity that generates hydrogen greatly, methane conversion and entire system efficient; This absorbent regeneration technology is simple, and the absorbent that reacts completely promptly is decomposed into carbon dioxide and fresh absorbent being heated more than 850 ℃, can come into operation again at once, also helps simultaneously the carbon dioxide after separating is focused on; High stability reactivity is the outstanding feature of this absorbent, promptly after experiencing repeatedly the circulation of absorption/regenerative response, absorbent does not descend to the absorbability of carbon dioxide, can adapt to high absorption the in the actual production, many circulations, the requirement that reaction time is long is badly in need of the absorbent regeneration difficulty that solves and reactivity with the too fast problem of cycle period decline thereby solved in the water vapour methane reforming hydrogen manufacturing industry.This absorbent main component is Ca
12Al
14O
33With CaO.Ca wherein
12Al
14O
33Can hinder the sintering between the calcium oxide particle, guarantee the stable reactivity of absorbent, CaO is the main matter of absorbing carbon dioxide.This product chemistry stable in properties can be regulated Ca in preparation technology
12Al
14O
33With the CaO content ratio, thereby between absorbent activity, stability and absorbability, reach optimum value, can adapt to following more wider actual production requirements according to different work purposes.
Calcium base CO
2Absorbent is because its absorbability is strong, with low cost, and raw material sources are extensive, and preparation and regeneration technology are simple, and green non-poisonous characteristics are used widely.Except developing various new calcium base CO
2Absorbent, external non-calcium base solid CO at present
2The absorbent exploitation also has certain development, as Li
4SO
4With PbO etc.
Fig. 2 is several in the world solid CO at present
2The circular response stability and the CO of absorbent
2Uptake and this product compare (Mahesh V.Iyer, Himanshu Gupta, Bartev B.Sakadjian, and Liang-Shih Fan, Multicyclic Study on the Simultaneous Carbonation and Sulfation of High-ReactivityCaO, Ind.Eng.Chem.Res.2004,43,3939-3947).As seen, with the CO of this product
2Uptake 45% compares, though be lower than some solid CO in the early stage
2Absorbent, but for the consideration of practical application in industry, the repeatedly CO of absorbent behind the circular response
2Absorbability is significant more.Because the CO of this product
2Absorbability does not change along with the circular response number of times increases, and to increase its performance advantage more and more obvious along with the circular response number of times.As seen the reactivity of product of the present invention, the i.e. CO of absorbent behind the circular response repeatedly
2Absorbability is not only at calcium base CO
2In the absorbent, even at the existing various solid CO that drop into practical application
2Also the highest (it is special nanoscale CaO particle that absorbability among the figure and reactivity are the highest CaO (sub-microns), only is in laboratory stage at present, is not suitable for the practical application in the industry) in the absorbent.Compare other absorbents in addition, this absorber material is with low cost, and preparation technology is simple, has stronger competitiveness in large-scale industrial application.
Embodiment 1
Preparation raw material: 2-propanol, distilled water, 9 water aluminum nitrates, CaO
Preparation process:
(1) calcium oxide was calcined 2 hours at 900 ℃;
(2) at 25 ℃ of calcined oxide calcium that add weighing, add isopropyl alcohol then, add distilled water again;
(3) add 9 water aluminum nitrates;
(4) in 75 ℃ of waters bath with thermostatic control, stirred 1 hour;
(5) under 100 ℃, carry out drying, till the water evaporates in sample is intact, and write down drying time;
(6) drying is good sample takes out, and calcining is 3 hours in 500 ℃, takes out then, and the sample mill comminution is thin.
(7) add distilled water, drying is 2 hours under 80 ℃;
(8) drying is good sample was calcined 1 and a half hours down at 900 ℃;
(9) sample is ground porphyrize, promptly can be made into high active calcium-base CO
2Absorbent.
Illustrate: press CaO/Ca
12Al
14O
33Be that 75/25 ratio prepares the 30g absorbent, the value in the amount according to the form below of each raw material is got.
| CaO/Ca 12Al 14O 33 | CaO(g) | Al(NO 3) 3.9H 2O(g) | Distilled water (ml) | (CH 3) 2CHOH(mol) |
| 75/25 | 26.2 | 28.4 | 760 | 0.23 |
Embodiment 2
Preparation raw material: ethanol, distilled water, anhydrous Aluminum chloride, calcium oxide
Preparation process:
(1) calcium oxide was calcined 4 hours at 800 ℃;
(2) at the calcined oxide calcium of room temperature adding weighing, add ethanol then, add distilled water again;
(3) add aluminium salt;
(4) in 75 ℃ of waters bath with thermostatic control, stirred 1 hour;
(5) under 100 ℃, carry out drying, till the water evaporates in sample is intact;
(6) drying is good sample takes out, and calcining is 3 hours in 600 ℃, takes out then, and the sample mill comminution is thin;
(7) add distilled water, drying is 2 hours under 80 ℃;
(8) drying is good sample was calcined 3 hours down at 700 ℃.
(9) sample is ground porphyrize, promptly can be made into high active calcium-base CO
2Absorbent.
Illustrate: press CaO/Ca
12Al
14O
33Be that 60/40 ratio prepares the 30g absorbent, the value in the amount according to the form below of each raw material is got.
| CaO/Ca 12Al 14O 33 | CaO(g) | AlCl 3(g) | Distilled water (ml) | CH 3CH 2OH(mol) |
| 60/40 | 23.8 | 16.2 | 760 | 0.36 |
Embodiment 3
Preparation raw material: methyl alcohol, distilled water, 9 water aluminum nitrates, CaO
Preparation process:
(1) calcium oxide was calcined 1 hour at 1000 ℃;
(2) at 25 ℃ of calcined oxide calcium that add weighing, add methyl alcohol then, add distilled water again;
(3) add 9 water aluminum nitrates;
(4) in 75 ℃ of waters bath with thermostatic control, stirred 1 hour;
(5) under 100 ℃, carry out drying, till the water evaporates in sample is intact, and write down drying time;
(6) drying is good sample takes out, and calcining is 3 hours in 700 ℃, takes out then, and the sample mill comminution is thin;
(7) add distilled water, drying is 2 hours under 80 ℃;
(8) drying is good sample was calcined 1 hour down at 1100 ℃;
(9) sample is ground porphyrize, promptly can be made into high active calcium-base CO
2Absorbent.
Illustrate: press CaO/Ca
12Al
14O
33Be that 80/20 ratio prepares the 30g absorbent, the value in the amount according to the form below of each raw material is got.
| CaO/Ca 12Al 14O 33 | CaO(g) | Al(NO 3) 3.9H 2O(g) | Distilled water (ml) | CH 3OH(mol) |
| 80/20 | 27 | 23 | 760 | 0.19 |
Claims (5)
1, a kind of high active calcium-base CO
2Absorbent is characterized in that: described absorbent main component is CaO and Ca
12Al
14O
33, mass ratio is 60: 40～80: 20.
2, a kind of high active calcium-base CO
2The preparation method of absorbent is characterized in that: described method is with alcohols, distilled water, and aluminium salt, calcium oxide are raw material, its preparation process is followed successively by:
(1) calcium oxide was calcined 1～4 hour at 800～1000 ℃;
(2) calcium oxide of weighing step (1) calcining under the room temperature adds alcohols then, adds distilled water again;
(3) in above-mentioned compound, add aluminium salt, by required absorbent quality and final CaO: Ca
12Al
14O
33Proportional meter is calculated and is added aluminium salt amount, stirs in the water bath with thermostatic control;
(4) compound that stirs is carried out drying, till the water evaporates in sample is intact;
(5) the dry good sample of step (4) was calcined 3 hours in 500～700 ℃, taken out then, the sample mill comminution is thin;
(6) in above-mentioned levigate material, add distilled water, drying;
(7) drying is good sample was calcined 1～3 hour down at 700～1100 ℃;
(8) sample after will calcining grinds porphyrize, is high active calcium-base CO
2Absorbent.
3, according to the described high active calcium-base CO of claim 2
2The preparation method of absorbent is characterized in that: described alcohols is any in isopropyl alcohol, ethanol, the methyl alcohol.
4, according to the described high active calcium-base CO of claim 2
2The preparation method of absorbent is characterized in that: aluminium salt is solvable in water in the described raw material, and aluminium salt is any in anhydrous Aluminum chloride, the 9 water aluminum nitrates.
5, according to the described high active calcium-base CO of claim 2
2The preparation method of absorbent is characterized in that: described raw material calcium base is CaO, by lime, lime stone, dolomite, calcite material preparation.
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| CNB2005100112328A CN1317065C (en) | 2005-01-21 | 2005-01-21 | High active calcium-base CO2 absorbent and its preparing method |
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|---|---|---|---|
| CNB2005100112328A CN1317065C (en) | 2005-01-21 | 2005-01-21 | High active calcium-base CO2 absorbent and its preparing method |
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|---|---|
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| CN1317065C true CN1317065C (en) | 2007-05-23 |
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| CN102271803B (en) * | 2008-11-11 | 2014-02-05 | 昆士兰大学 | Method for producing sorbents for CO2 capture under high temperatures |
| CN101653718B (en) * | 2009-09-03 | 2012-03-21 | 昆明理工大学 | Method for preparing lithium silicate material for absorbing CO2 at high temperature |
| EP2478073B1 (en) * | 2009-09-18 | 2018-03-28 | Wormser Energy Solutions, Inc. | Integrated gasification combined cycle plant with char preparation system |
| US9873840B2 (en) | 2009-09-18 | 2018-01-23 | Wormser Energy Solutions, Inc. | Integrated gasification combined cycle plant with char preparation system |
| CN101732979B (en) * | 2010-01-22 | 2012-08-15 | 东南大学 | Preparation method of composite absorber for removing carbon dioxide from flue gas |
| CN101961638B (en) * | 2010-10-22 | 2012-09-19 | 浙江大学 | Method for preparing wear-resistant nano calcium oxide-based carbon dioxide reaction adsorbent |
| CN102784630A (en) * | 2012-07-25 | 2012-11-21 | 华中科技大学 | Preparation method for calcium-based CO2 sorbent |
| CN102886202A (en) * | 2012-11-07 | 2013-01-23 | 公安部天津消防研究所 | Preparation method of calcium hydroxide module for oxygen respirator |
| CN103071373B (en) * | 2013-02-01 | 2014-12-10 | 山东大学 | Method for preparing high-activity CO2 absorbent with carbide slag |
| CN114729275A (en) | 2019-11-25 | 2022-07-08 | 沃姆泽能源解决方案股份有限公司 | Coke making system and gasifier for all-steam gasification with carbon capture |
| CN111632476A (en) * | 2020-05-29 | 2020-09-08 | 武汉理工大学 | Carbon dioxide adsorbent and preparation method thereof |
| CN114988360B (en) * | 2022-05-13 | 2023-03-24 | 中国成达工程有限公司 | Method for preparing synthesis gas by natural gas partial oxidation and carbon dioxide self-heating reforming |
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| CN1212829A (en) * | 1997-09-26 | 1999-04-07 | 三菱瓦斯化学株式会社 | Oxidizing producing agent, carbon dioxide absorbent, transport system for live fish and shellfish and its transport method |
| US6737031B2 (en) * | 2000-09-27 | 2004-05-18 | Alstom Power Nv | Method of simultaneously reducing CO2 and SO2 emissions in a combustion installation |
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|---|---|---|---|---|
| SU778753A1 (en) * | 1978-02-23 | 1980-11-15 | Институт Нефтехимического Синтеза Им. А.В.Топчиева Ан Ссср | Method of producing spheric pellets of carbon dioxide solid absorber |
| CN1212829A (en) * | 1997-09-26 | 1999-04-07 | 三菱瓦斯化学株式会社 | Oxidizing producing agent, carbon dioxide absorbent, transport system for live fish and shellfish and its transport method |
| US6737031B2 (en) * | 2000-09-27 | 2004-05-18 | Alstom Power Nv | Method of simultaneously reducing CO2 and SO2 emissions in a combustion installation |
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